Important Warning: Installation of this driver requires removing the restricted-modules package in order to work. That package includes drivers for madwifi (Atheros wireless cards), nvidia cards, and a handful of other devices. I provide a work-around for the madwifi drivers, but you need to perform it before removing the restricted modules (jump to end of this this post).

When running the dpkg-reconfigure command you should answer the questions that you know and take the defaults for the rest. You might want to say no to the monitor detection--it has caused X-Windows to crash for some people.

Confirm that it works

Troubleshooting

The output of dmesg | grep fglrx and /var/log/Xorg.0.log are most useful when looking for errors.

It might be necessary to create a symlink to get accelerated OpenGL:

sudo ln -s /usr/lib/dri /usr/lib/xorg/modules/dri

To ensure you automatically get the current linux-restricted-modules package with kernel updates, you should install the linux-restricted-modules-??? package matching your kernel-type (without version numer), e.g. linux-restricted-modules-386, linux-restricted-modules-686 or linux-restricted-modules-k7.

Important Change: Installation of this driver no longer requires removing the linux-restricted-modules package in order to work. There is a new blacklist feature in Ubuntu Dapper that you can use to go around this.

When running the dpkg-reconfigure command you should answer the questions that you know and take the defaults for the rest. You might want to say no to the monitor detection--it has caused X-Windows to crash for some people.

Confirm that it worked

Troubleshooting

General

Look for error messages in /var/log/Xorg.0.log and kern.log.

HP dv5029us Notebook PC

If you have an HP Notebook Computer such as the HP dv5029dvus it is needed to modify the BIOS configuration. It seems for some reason using sideport memory (the card's onboard memory only) leads to an apparent system crash although the logs show successful initialization of DRI. It is needed to run the BIOS setup screen, go to memory options, and select UMA+Sideport memory and assign a value to it (I assigned an extra 128M from the system RAM). Boot the computer and the fglrx driver will work. FGLRX version is 8.23.7 on an i386 Ubuntu Dapper install.